Question

Smaller foodchains are advantageous of energy

Answer 1

Short food chains are more efficient in terms of energy. Energy is lost in every step of the food chain. As we go up, the available energy actually decreases. This is in accordance with the third law of thermodynamics. The shorter the food chain is, more is the available amount of energy, making it more efficient.
For example- Grass →rabbit→ snake→Hawk